Refinement of the crystal structure of UOs₂ from single-crystal X-ray diffraction data

Refinement of the crystal structure of UOs₂ was performed for the first time by using single-crystal X-ray diffraction data, which allowed the refinement of all U^ij terms of the displacement parameters.

{Bis[2-(pyridin-2-yl)eth­yl]amine}­dibromidocopper(II)

Two molecules with slightly different five-coordinate Cu^II atoms are present in the asymmetric unit of thetitle complex.

Chlorido­((E)-2-{2-[(2-hy­droxy­benzyl­idene)amino]-2-(pyridin-2-yl)-1-[(pyridin-2-ylmeth­yl)amino]eth­yl}phenolato-κ⁴N,N′,N′′,O)copper(II)

The title copper(II) complex shows the central Cu^II cation to be in a slightly distorted square-pyramidal coordination by the [ClN₃O] coordination set.

trans-Di­aqua­bis­(pyridin-2-yl thio­phen-2-yl ketone-κ²N,O)cobalt(II) bis­(tetra­fluorido­borate)

A complex of Co^II with the ligand 2-thienyl-2-pyridyl ketone shows pseudo-octa­hedral binding of the central metal cation with two ligands bound through the carbonyl oxygen and pyridyl nitro­gen, and two coordinating water mol­ecules in the axial positions.

Carnosinium bromide

The asymmetric unit of the title salt contains four cations and four anions. The dipeptide is a 'cationic zwitterion' with two localized positive charges and one delocalized negative charge. Two of the cations adopt an anti conformation for the non-hydrogen atoms of the –C(=O)—CH₂—CH₂—NH₃⁺ grouping and two adopt a gauche conformation. In the extended structure, numerous N—H⋯O, N—H⋯(O,O) and N—H⋯Br hydrogen bonds link the components into (010) sheets and the structure is consolidated by weak C—H⋯O and C—H⋯Br inter­actions.

(2E)-2-[(4-Eth­oxy­phen­yl)imino]-1,2-di­phenylethanone

In the title compound, an imino-ketone Schiff base, the configuration about the azomethine bond is E.

2,9-Di­methyl­phenanthro[2,1-b:6,5-b′]di­thio­phene

The title mol­ecule is puckered due to steric crowding. The extended structure features C—H⋯π inter­actions.